/** * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved. * * This source file is released under GPL v2 license (no other versions). * See the COPYING file included in the main directory of this source * distribution for the license terms and conditions. * * @File ctresource.c * * @Brief * This file contains the implementation of some generic helper functions. * * @Author Liu Chun * @Date May 15 2008 * */ #include "ctresource.h" #include "cthardware.h" #include #include #define AUDIO_SLOT_BLOCK_NUM 256 /* Resource allocation based on bit-map management mechanism */ static int get_resource(u8 *rscs, unsigned int amount, unsigned int multi, unsigned int *ridx) { int i, j, k, n; /* Check whether there are sufficient resources to meet request. */ for (i = 0, n = multi; i < amount; i++) { j = i / 8; k = i % 8; if (rscs[j] & ((u8)1 << k)) { n = multi; continue; } if (!(--n)) break; /* found sufficient contiguous resources */ } if (i >= amount) { /* Can not find sufficient contiguous resources */ return -ENOENT; } /* Mark the contiguous bits in resource bit-map as used */ for (n = multi; n > 0; n--) { j = i / 8; k = i % 8; rscs[j] |= ((u8)1 << k); i--; } *ridx = i + 1; return 0; } static int put_resource(u8 *rscs, unsigned int multi, unsigned int idx) { unsigned int i, j, k, n; /* Mark the contiguous bits in resource bit-map as used */ for (n = multi, i = idx; n > 0; n--) { j = i / 8; k = i % 8; rscs[j] &= ~((u8)1 << k); i++; } return 0; } int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx) { int err; if (n > mgr->avail) return -ENOENT; err = get_resource(mgr->rscs, mgr->amount, n, ridx); if (!err) mgr->avail -= n; return err; } int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx) { put_resource(mgr->rscs, n, idx); mgr->avail += n; return 0; } static unsigned char offset_in_audio_slot_block[NUM_RSCTYP] = { /* SRC channel is at Audio Ring slot 1 every 16 slots. */ [SRC] = 0x1, [AMIXER] = 0x4, [SUM] = 0xc, }; static int rsc_index(const struct rsc *rsc) { return rsc->conj; } static int audio_ring_slot(const struct rsc *rsc) { return (rsc->conj << 4) + offset_in_audio_slot_block[rsc->type]; } static int rsc_next_conj(struct rsc *rsc) { unsigned int i; for (i = 0; (i < 8) && (!(rsc->msr & (0x1 << i))); ) i++; rsc->conj += (AUDIO_SLOT_BLOCK_NUM >> i); return rsc->conj; } static int rsc_master(struct rsc *rsc) { return rsc->conj = rsc->idx; } static const struct rsc_ops rsc_generic_ops = { .index = rsc_index, .output_slot = audio_ring_slot, .master = rsc_master, .next_conj = rsc_next_conj, }; int rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP type, u32 msr, struct hw *hw) { int err = 0; rsc->idx = idx; rsc->conj = idx; rsc->type = type; rsc->msr = msr; rsc->hw = hw; rsc->ops = &rsc_generic_ops; if (!hw) { rsc->ctrl_blk = NULL; return 0; } switch (type) { case SRC: err = hw->src_rsc_get_ctrl_blk(&rsc->ctrl_blk); break; case AMIXER: err = hw->amixer_rsc_get_ctrl_blk(&rsc->ctrl_blk); break; case SRCIMP: case SUM: case DAIO: break; default: dev_err(((struct hw *)hw)->card->dev, "Invalid resource type value %d!\n", type); return -EINVAL; } if (err) { dev_err(((struct hw *)hw)->card->dev, "Failed to get resource control block!\n"); return err; } return 0; } int rsc_uninit(struct rsc *rsc) { if ((NULL != rsc->hw) && (NULL != rsc->ctrl_blk)) { switch (rsc->type) { case SRC: rsc->hw->src_rsc_put_ctrl_blk(rsc->ctrl_blk); break; case AMIXER: rsc->hw->amixer_rsc_put_ctrl_blk(rsc->ctrl_blk); break; case SUM: case DAIO: break; default: dev_err(((struct hw *)rsc->hw)->card->dev, "Invalid resource type value %d!\n", rsc->type); break; } rsc->hw = rsc->ctrl_blk = NULL; } rsc->idx = rsc->conj = 0; rsc->type = NUM_RSCTYP; rsc->msr = 0; return 0; } int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type, unsigned int amount, struct hw *hw) { int err = 0; mgr->type = NUM_RSCTYP; mgr->rscs = kzalloc(((amount + 8 - 1) / 8), GFP_KERNEL); if (!mgr->rscs) return -ENOMEM; switch (type) { case SRC: err = hw->src_mgr_get_ctrl_blk(&mgr->ctrl_blk); break; case SRCIMP: err = hw->srcimp_mgr_get_ctrl_blk(&mgr->ctrl_blk); break; case AMIXER: err = hw->amixer_mgr_get_ctrl_blk(&mgr->ctrl_blk); break; case DAIO: err = hw->daio_mgr_get_ctrl_blk(hw, &mgr->ctrl_blk); break; case SUM: break; default: dev_err(hw->card->dev, "Invalid resource type value %d!\n", type); err = -EINVAL; goto error; } if (err) { dev_err(hw->card->dev, "Failed to get manager control block!\n"); goto error; } mgr->type = type; mgr->avail = mgr->amount = amount; mgr->hw = hw; return 0; error: kfree(mgr->rscs); return err; } int rsc_mgr_uninit(struct rsc_mgr *mgr) { if (NULL != mgr->rscs) { kfree(mgr->rscs); mgr->rscs = NULL; } if ((NULL != mgr->hw) && (NULL != mgr->ctrl_blk)) { switch (mgr->type) { case SRC: mgr->hw->src_mgr_put_ctrl_blk(mgr->ctrl_blk); break; case SRCIMP: mgr->hw->srcimp_mgr_put_ctrl_blk(mgr->ctrl_blk); break; case AMIXER: mgr->hw->amixer_mgr_put_ctrl_blk(mgr->ctrl_blk); break; case DAIO: mgr->hw->daio_mgr_put_ctrl_blk(mgr->ctrl_blk); break; case SUM: break; default: dev_err(((struct hw *)mgr->hw)->card->dev, "Invalid resource type value %d!\n", mgr->type); break; } mgr->hw = mgr->ctrl_blk = NULL; } mgr->type = NUM_RSCTYP; mgr->avail = mgr->amount = 0; return 0; } id=24d615a694d649aa2e167c3f97f62bdad07e3f84'>patch) tree2fe33c115bdec6bf4b01e27afd90bb16fa668e22 /drivers/usb/serial/aircable.c parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
USB: serial: qcserial: add Dell DW5570 QDL
The Dell DW5570 is a re-branded Sierra Wireless MC8805 which will by default boot with vid 0x413c and pid 0x81a3. When triggered QDL download mode, the device switches to pid 0x81a6 and provides the standard TTY used for firmware upgrade. Cc: <stable@vger.kernel.org> Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb/serial/aircable.c')